###Group "[publiclaboratory](https://groups.google.com/group/publiclaboratory)"###

8/24/2012: 454
9/12/2012: 530
9/19/2012: 646
10/2/2012: 700
10/30/2012: 751
1/7/2013: 982

###Group "[grassrootsmapping](https://groups.google.com/group/grassrootsmapping)"###

9/12/2012: 486
9/19/2012: 559
10/30/2012: 632

###Group "[plots-boston](https://groups.google.com/group/plots-boston)"###

10/2/2012: 68
1/7/2013: 111

###Group "[plots-spectrometry](https://groups.google.com/group/plots-spectrometry)"###

10/2/2012: 67
10/30/2012: 126
12/19/2012: 275
1/7/2012: 353

###Group "[plots-nyc](https://groups.google.com/group/plots-nyc)"###

10/30/2012: 110
1/7/2013: 133